Gas-burlfer



J. E. MARTIN.

c s BURNER. APPLICATION FILEDMAR. I0. 1916.

Patented Aug. 8, 1916.

JOSEPH E. MARTIN, OF KANSAS CITY, MISSOURI.

GAS-BURNER.

moaoeo.

Specification of Letters Patent.

Patented Aug. 8, 1916.

Application filed March 10, 1916. Serial No. 83,293.

To all whom it may concern:

Be it known that I, JOSEPH E. MARTIN, a citizen of the'United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification.

This invention relates to gas burners for heating and more especially to gas burners for use in ranges and the like, my object being to produce a gas burner which will operate efiiciently at a minimum distance from a vessel bottom of flat surface, and in which the distribution of the flames over the vessel bottom will materially exceed that of an ordinary burner of the same gas consumption.

It is a desideratum in gas burning apparatus to locate the burner near the bot tom of the vessel as by so doing the maximum number of heat units is utilized, and I have found by practical demonstration that the burner of this application can be located and efiiciently operated close to the bottom of a vessel, as it eliminates eddying or rebounding of burning gases away from the bottom of the vessel and the vitiation of the burning gases by the escaping burned ases.

Specifically my prime object is to produce a burner which makes provision for the outward travel of the burned and burning gases against the bottom of the vessel without any possibility of the former vitiating the latter or of the latter eddying away from the bottom of the vessel.

With the objects named in view, the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed;

and in order that itlmay be fully under:

stood reference is to be had to the accompanying drawing, in which- Figure 1, is a broken plan view of a part of a range equipped with the preferred form of my burner. Fig. 2, is a central vertical section of a modification of the same.

In the said drawing, 1 indicates the grid orgrating of a gas range, 2 is the mixing tube through which gas and primary air enters the burner head 3, said head having an upwardly projecting hollow boss 4r communicating with the body of the head- Th boss is of approximately truncated conical form, and extending vertically through the burner head from the bottom thereof to the top of the boss is a secondary air passage 5,in thepreferred construction, through which air circulates upwardly to cooperate in producing perfect combustion of the mixture of gas and primary air issuing through the burner openings 6, which openings are shown as of the saw-kerf type with their opposite ends lying in different horizontal and vertical planes.

7 is an inverted frustum shaped collar resting upon the burner head in a plane below the lower ends of the saw-kerfs 6 and terminating in a horizontal plane a fraction of an inch above the plane of the upper ends of said kerfs, that is against or adjacent to the bottom of the vessel-supporting fingers. 8 of the grid or grating 1, said fingers preferably projecting slightly above the plane of the braces or cross pieces 9 connecting them. The collar 7 is provided in its inner or lower edge with a series of notches or openings 10 through which an auxiliary or outerv supply of secondary air may flow and obtain access to the outer ends and sides of the flames rising upwardly and outwardly through the burner slots or orifices.

In the preferred type of burner as shown by- Fig. 1, a horizontal reflecting plate or ring 11 is located at the junction of the upper edge of the collar and the fingers 8, the function of said plate being to reflect heat and burning gases against the bottom of a vessel after the latter has deflected such heat and gases downward. The plate therefore tends to hold heat and burning gases in proximity to the outer portion of the vessel bottom and thus obtain the benefit of the heat by keeping it spread or distrib uted over the full area of the vessel bottom. The employment of the reflecting plate also provides in combination with the vessel bottom and grid fingers, shallow channels wherein the outwardly rushing gases produce a suction tending to accelerate the outward movement ofthe burning and burned gases from the center ofthe burner.

In the construction shown vby Fig. 2, a suction is produced between the bottom of the vessel and the upper edge of the .collar, while this travel of the gases brings them against the bottom of the vessel it does not retain them there to the same extent as they get this result gives the advantage of a wide range of distribution of the burning gases on the bottom of the vessel to obtain the maximumheating efliciency from the burner regardless of the diameter of the vessel bottom. This is not true of the ordinary type of burner which must be placed a greater distance below a large vessel than asmallone to obtain the greatest efficiency. in operation. If the ordinary type ofburner is located -too near the vessel bottom the burning gases will eddy away from the bottom of the-vessel and there is the added disadvantage of a lack of suflicient suction to accelerate the outflow of burned gases and thereby avoid vitiating part of the flame.

In my burner the flames are continued approximately as indicated in the drawing, and this being true it is apparent that there can be no smothering of the flames and that the latter do not materially eddy away from the bottom of the vessel, and that consequently it is possible to dispose the burner very close to the bottom of the vessel regardless of its size.

To facilitate perfect combustion the burner is provided at the upper end of the passage 5, with notches 12, between the inner ends of the thin blades of flame rising from the burner in the planes of the kerfs 6. These notches permit secondary air from the said passagesto pass between and mix with the blades of flame where they are most closely bunched and hence where it is most difiicult to supply secondary air in the desired volume.

From the above description it will be apparent that I have produced a gas burner possessing the features of advantage enumerated as desirable in the statement of the object of the invention and while I have illustrated and described the preferred embodiments of the invention, I wish it to be understood that I reserve the right to make all changes in the form, proportion, detail construction and organization of the parts as fall fairly within the spirit and scope of the appended claims.

I claim:

1. A burner comprising a hollow head, having an upwardly projecting boss of truncated-cone form and also having a central tube extending from the bottom of the head to the crest of the boss; the wall of the boss having gas .jet openings whose innermost ends lie at the crest of the boss adjacent the upper end of said tube and whose outermost ends lie at points diagonally downward and outward from said innermost ends.

2. A burner comprising a. hollow head having an" upwardly projecting boss of truncated-cone form and also having a central tube extending from the bottom of the head to the crest. of the boss; the wall of the boss having .gas jet openings whose innermost ends lie at the crest of the boss adjacent the upper end of said tube and whose outermost stantially below the top of the burner; said burner having a central vertical passage ex tending from its bottom to its top for the upward passage of secondary air; the burner being provided with notches at the upper end of the passage arranged in staggered relation to the inner ends ofthe openings. v

In testimony whereof, I affix. my signature, in the presence of two witnesses.

JOSEPH E. MARTIN.

Witnesses:

H. c. Rotmias, G. Y. TIIORPE.

It is hereby certified that in Letters Patent No. 1,194,050, granted August 8,

1916, upon the application of Joseph E. Martin, of Kansas City, Missouri, for an I improvement in Gas-Burners, an error appears in the printed specification requiring correction as follows: Page 2, line 31, for the word continued read contoured; and that the said Letters Patent should be read with thie correction therein that the same may conformto the record of the case in the Patent Office Signed and sealed this 3d day of October, A; 15., 1916.

F. W. H. CLAY,

[SE L] 

